Once dismissed as ugly ducklings, flawed and unusual stones are increasingly being championed by high-end jewelers.

There were some luxury brands using gemstones, but there was nothing in the middle that had a modern aesthetic while incorporating the healing energy aspect.

raw-mineral jewellery is in the full flush of style. On the catwalk, designers broached uncut gems with a maximalist mood; at Givenchy a collection inspired by Egypt saw oversized slabs of blue ...